Improvement in charcoal-kilns



C. T. HARVEY.

Charcoal Kiln.

No. 36,090.- Patented Aug. 5, 1862.

N. Pneus. Phnnfumgmpher, wglhngmn. D c.

Nrrn STATES CHARLES T. HARVEY, OF CHICAGO`, ILLINOIS.

IMPRVEMENT IN CHARCOAL-KILNS.

Specification forming part of Letters Patent O. 36,090, dated August 5, 18612.

T 0 @ZZ whom t may concern:

Be it known that I, CHARLEs T. IIARvEY, of the city of Chicago, county of Cook, and

. State of Illinois, have invented a new and usement is to combine a kiln for the manufacture of charcoal so as to secure portability exclusion of air, strength, and durability in a novel and useful manner. I do this by a combination described as follows: I construct an outer shell or covering of convenient form and size, of metal (sheet-iron preferred) divided into convenient segments,.sections, or parts, composed of one or more sheets of metal, and prepared with bolts or other fastenings, so that when each segment or part is placed in position it can be securely fastened to and with other segments or parts, so as to form, collectively, a complete metallic kiln, covering, or outer shell, strong and durable. I then lay upon the inside a thin wall of brick or stone, having a space left between it and the metallic covering, as shown in Fig. 4 of the drawings hereto attached. I then fill in the space between the masonry lining and metallic covering with cement or grout formed of tire-clay or other fluid mortar, hardening in due time, which, when accomplished, renders the kiln complete and ready for use.

After using the kiln in one locality as long as may be expedient, I proceed to unfaste'n the bolts or other means of securing the segments or parts of the metallic covering to each other leaving it detached in parts or pieces of convenient size, and removing these one by one I re-erect them in another place, as desired. The lining of brick or masonry being by the removal of the metal segments uncovered and unsupported is easily loosened and thrown down, with little damage to the brick or stone composing it, which is then removed, to be reused as lining to the metal covering inV its new location, and with only the trilling loss of the mortar in which it is laid and of the cement center or intermediate lining, which alone is to be removed at each removal of the kiln. Thus while the dividing of the metallic covering into convenient segments or parts renders thekiln essentially portable, the combination of it with an inside wall, as stated, and with an intermediate lining of cement or other fluid and hardening substance, renders it air-tight and solid, and protects the metal from the internal heat in a manner novel and useful, and forming a combination as yet untried in the manufacture of charcoal, except by the undersigned or his agents.

The accompanying drawings show one form in which the combination may be successfully applied.

Fig. l shows the metallic covering in place. K K and D D in same figure show a plan of the joints and arrangement of segments and one method b y which they can be fastened properly, as does also Fig. 3. Fig. 2, being a transverse section, shows the metallic cov'- ering at A, combined with 'the interior wall of masonry at B, and with the intermediate cement or grout lining at C. Fig. 4t shows the outer metal and innerv masonry wall, with a space left for illing in the fluid hardening material to cement the two and form an air-4 CHARLES T. HARVEY.

Vitnesses:

I. H. PHILLIrs, Ti-roMAs EAG-nary. 

